[gdal-dev] [RFC] [GDAL] Idea for GSoC, 2014

Chaitanya kumar CH chaitanya.ch at gmail.com
Mon Jan 27 00:22:08 PST 2014

Hi all,
I talked with Kshitij about this idea at length. I am sure that he can do a
good job. He has the programming skills and has academic background in
image processing and computer vision.

I am willing to co-mentor him.

You did not include the extensions we discussed. Estimating the shift
between two georeferenced images, matching rasters with vector datasets.

On Mon, Jan 27, 2014 at 1:16 PM, Kshitij Kansal <kansal.k at gmail.com> wrote:

> Hello Everyone
> I am an undergrad student in my Junior year of study. I have been involved
> with some research in field of Spatial Temporal Analysis of Images. I have
> been using the GDAL for various purposes, for quite some time now. I
> thought that now its time to contribute something to Open Source Community.
> So I started to think about the GSoC, 2014. As I started browsing the last
> year's ideas, one idea that I could relate was "*Raster / Vector
> Geo-referencer on the Web*".
> *Motivation:*
> The main motivation behind this is that, among the very first things that
> are required in many remote sensing/geo-spatial related projects are
> geo-referenced images. Most of the images that we have are generally not
> referenced and hence we have to go to some tool and MANUALLY reference them
> with the help of some reference image. This generally takes a lot of time
> and most of the times errors do creep in.
> *Original Idea:*
> What has been proposed in this(as a part of GSoC'13 idea) was that we
> should provide two image, one reference image and other un-referenced
> image. Now with the help of this we should be able to geo-reference this
> unreferenced image by MANUALLY selecting the Control Points. Some thing
> like this :
> http://www.youtube.com/watch?feature=player_embedded&v=88gt1gj2dbs
> *Modified Idea:*
> Now what I felt was that, this idea can be made more innovative and useful
> if we can AUTOMATE this whole process of geo-referencing along with
> providing the option for manual selection. This is where the knowledge of
> Image Processing can help. There are various algorithms(like SIFT/SURF)
> which can be used for doing this. We can apply these algorithms and extract
> the GCP's and then geo-reference the images. Also, this thing has not been
> implemented in any of the other open source softwares(like GRASS,QGIS). So
> if we can implement this, other communities can build on these ideas or
> even adapt it. It would be "entirely based on GDAL and completely
> reusable"
> Furthermore, this idea can be expanded a lot in the sense that we should
> not not put restrictions to the number of bands in the images. Now what I
> mean by this is that reference image's bands may not be the same order of
> unreferenced. It should work with images of any number of bands.
> Any Comments or Suggestions or Feedback ?
> Anyone willing to help me in this?
> Regards,
> Kshitij Kansal
> Lab For Spatial Informatics,
> IIIT Hyderabad
> _______________________________________________
> gdal-dev mailing list
> gdal-dev at lists.osgeo.org
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Best regards,
Chaitanya kumar CH.

17.2416N 80.1426E
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